+ 0 Votes All hardware wears out over time............... ThumbsUp2 6 years ago The person who told your friend that it damages the hard drive doesn't know their stuff. All parts wear out over time, simply by use. Doing multiple defrags, even daily/weekly, does causes less wear and tear than forcing the read/write head to locate all of the parts of fragmented files that are frequently used. In fact, waiting until the drive is 20% fragmented is putting more strain on it than doing it weekly when it's below 3% fragmented. Not doing defrag at all will shorten the life of the drive. + 0 Votes It does not hurt it at all. Slayer_ 4 years ago HDD's are just like cars, usage does not kill them, time does. Often HDD's will last longer if they are not often powered down (spin up is tough on them, turn off shutting down of hard disks in power options after your Drive is getting old [7-10 years maybe?]) My current server is running a 13 year old HDD, my old parts lookup machine that still works and is still in use, has a HDD that is nearly 15 years old now. (1gb HDD). My gaming machine, I have my HDD's set to defrag every night with standard windows defrag. Then once in awhile I use a third party tool to do a really good defrag. + 0 Votes If you don't defrag for up to 6 months, all I can say is... OldER Mycroft 6 years ago You are one light-user. I tend to run a defrag analysis every weekend, then go with what the program advises. Almost every time you write to a hard disk, you create a degree of fragmentation since the write head tends to drop bits of the file wherever there is space, rather than look around for a space that is big enough. By not defragging you save the disk-thrashing that defragging involves - only to generate disk-thrashing as the read head searches for all the bits of the file it is looking for. "I usually do it when file fragmentation rise to like 20% or disk nearly full" If you wait until your disk is nearly full ( of what: files or fragmentation ?? )you run the risk of the defragmentation failing due to insufficient free space for the bits of the fragmented file to be reconstituted, thereby put back together again. It is the hard drives that tend to fragment - it does not matter what operating system is running on them. I used to defrag the hard drive on my Amiga 4000, and it's OS was closer to the MAC than the PC. + 0 Votes hmm TheVirtualOne 6 years ago defrag now. put a shortcut on the desktop and rename it "do this every week" then set it up to automatically defrag. defrag will not degrade the drives. its kinda like this. when data is dropped onto the platter of your hard drive it looks like casserole. when you tell the hard drive to find the peas in the casserole it has to look all over the place and it takes forever. defragging your hard drive separates all of the ingredients into nice, neat, clean, orgainized and labeled piles. so the next time you tell your computer to find something... it knows exactly where it is! you can quote me here fellas. I use this one a lot. + 0 Votes To defrag or not to defrag? mjd420nova 6 years ago I usually go with what the system says as to whether to defrag. I run disk cleanup, spyware, spybot and virus checks weekly on all my units and if needed or recommended by the system, a defrag. Going for extended periods without a defrag can take a long time to complete and might overheat the drive. If left for too long, there might not be enough room on the drive to do an effective defrag or have to break the files into smaller pieces thus taking extremely long periods to complete the process. + 0 Votes Local Retailer? bincarnato 6 years ago I wouldn't put too much weight on what a local retailer said about anything related to PC maintence or troubleshooting. Especially if you are talking about one from one of the big box stores. They typically have little or no experience in PC support. Fortunatley you were wise enough to go somewhere you would get sound advice from. This question is similar to the, "Do I leave my computer turned on all the time or shut it down when I am not using it?" + 0 Votes I defrag Karrtik 5 years ago I've been defragging regularly using an automatic defragmenter for as long as I've had my PC and havent faced any problems. So far I've not heard of anyone who has faced any issues on account of this either. + 0 Votes Depends on the hardware ps.techrep 4 years ago I may get flamed for this, but at work I used to defrag our server shared data volumes every month for more than 5 years, and never had a drive failure. It might have helped that they were SCSI drives. I have one of these 8 year old retired servers at home, and run JKDefag with scripts DAILY. The daily scripts just defrags files, the weekly and monthly scripts are more thorough. On my XP machines using IDE, I run a defrag each week. Some observations: 1. If you try to keep your C: partition clear of everything by system files, not only is the partition much smaller, but it needs less defragging work. If you keep your data files and applications on separate partitions, the same is true. 2. I have quite a bit of application churn, and notice that the applications partition and the Windows directory of my C: partition become far more fragmented than my data partitions. 3. I've never experienced a drive failure due to "wearing out the drive". Those that failed were due to PCs without real surge protection, and most had cases full of so much dust, that they looked like there were sweaters inside them. Every one of these was sitting on the floor under someone's desk in a carpeted room. So, unless you plan to keep using the same PC and hard drives for much longer than 5 years, you can ignore your girlfriends' local retailer. Install a real data device surge protector (better yet a conditioning UPS), clean out your PC physically as well as logically, and defrag away. + 0 Votes It does not hurt it at all. Slayer_ 4 years ago HDD's are just like cars, usage does not kill them, time does. Often HDD's will last longer if they are not often powered down (spin up is tough on them, turn off shutting down of hard disks in power options after your Drive is getting old [7-10 years maybe?]) My current server is running a 13 year old HDD, my old parts lookup machine that still works and is still in use, has a HDD that is nearly 15 years old now. (1gb HDD). My gaming machine, I have my HDD's set to defrag every night with standard windows defrag. Then once in awhile I use a third party tool to do a really good defrag.